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One of two small glands that produces a clear, viscous secretion known as pre-ejaculate. This fluid helps to lubricate the urethra for spermatozoa to pass through, and to help flush out any residual urine or foreign matter
the inner membrane of the uterus, preventing adhesions between the opposed walls of the myometrium, thereby maintaining the patency of the uterine cavity. During the menstrual cycle or estrous cycle, the endometrium grows to a thick, blood vessel rich, glandular tissue layer. This represents an optimal environment for the implantation of a blastocyst upon its arrival in the uterus.
an intermediary male gametogonium (a kind of germ cell) in the production of spermatozoa.
a male gametocyte which is derived from a spermatogonium. Initially, a spermatogonium divides by mitosis into two so-called primary spermatocytes
an embryo at an early stage of embryonic development, consisting of approximately 12-32 cells (called blastomeres
a hormone secreting glandular structure transformed after ovulation from a ruptured follicle
hormone produced by the corpus luteum; stimulates the secretion of the uterine lining; with estrogen, helps initiate puberty in females
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